Clutch for hoisting drums



April 18, 1933.

A. C. BENSON CLUTCH FOR HOISTING 'DRUMS Filed May 25, 1928B'Sheets-Sheet l April 18, 1.933.

A.`c. BENSON CLUTCH FOR HOISTING DRUMS Filed May 28, 1928 2 Sheets-Sheet2 31a/tunic@ Mi ttomwg Patented Apr. 18, 19h33 UNITED STATES rATaN'roFFicr.

C. BENSON, l' HOUSTON, TEXAS, ABBINOB T0 JAHRE Si. 0I Y HOUSTON, TEXAS vy (muren ron Hors-me nmnrs applicata, mea 'my as, iena. semi zo.280,873.

running the drawworks of a rig, where an in` tornai combustion en *i eis used as a source o ower, that an l.inary toothed clutch is unesirahle, due to the tact that the motor running at high speed Willexerta shock upon 4 the apparatus when this type of clutch is sud-4 w denlyconnected with the hoist i drum. By

the use of a rictional clutch i wiz may he largely avoided, but wheresuch a clutch is used it is dcult to adjustthe speed in the mannerdesired. My improvement includes a clutch, and means to positivelyadjust the same to obtain a plurality of A@eds without exerting a shockupon the nand the frictional enmne. i A 3@ is4 also desired to providean adjusting means tor regulatin the operation of a clutch which ho dthe parte in the dei' position positively, so t at they may notaccidentally shift from the desired osition.

Referring to the drawings herewit Fig. 14

is e front view showing my imroved clutch,

the clutch and the drum to 'wich it is ap-4 plied m in centrallongitudinal section.

Fig. 2 is a hroken view of the hoisting drum i illustrating a modifiedmeans for holding the 'clutch positively in the desired position.

Fig. 3 is a transverse section on the plane Vnef-enflgig. 2.. l y

The arran ement of my hoisting drum and the improv clutch thereon foroperation is intended to be thatvof the usual hoistin drum. It ismounted upon jack posts 1,11sua he wheel (iy which is adapted to beconnected to a sprocket wheel 7, onn adj acent shalt 8 hy means of asprocket chain m the, usual manner. o

At the op osite end of the shaft 2, and outside the jac posts, is asmall winding spool 9, ordinarily referred to as the cat head. 0n the oposite side of the jack post is a sprocket whee 10, which may beemployed to connect this shaft operativelywith a power shaft from anengine. Adjacent to sprocket wheel l0 is asmall sprocket wheel 1l adated to he connected by a sprocket chain with 'The shaft 8 is spacedsomewhat from the shaft 2, and has mounted thereon the hoisting drumindicated generally at A. This drum comprises a brake Harige 13 at eachend thereshaft 8, and it is to be understood that they a wheel l2 uponthe shaft 8 parallel therewith.

are thereby lixed ri idly to the shaft a ainst A movement longitu inallyor circum eren-- tiall v A T e outer periphery of the brake drum '13 isadapted to receive a brakev band 17in .the usual manner, and it is to beunderstood v l that this brake band is adaptedto be operated .in anydesiredmanner now old in the art.

The ,outer face of the brake drum 13 is A i provided with an annulargroove 18 which is tapered from the outer fece inwardly, us

will be apparent from the drnwings. inside the Bange relative to thegroove 18, the fece of the drum is recessed et to house e v et Wheel endhaving en inner face tapered as shown et 25, to t Within the teperedgroove or recess 18 in the drum. The tepered feces of the ring erepreferably provided with e facing 26 of some trictionei meter-inl suches is ordinerily empioyed on brake trends and the like. rJiiiis facingforms e rictionel contact with the two tempering sides, ot the grooves18, to engage thering with the drum when' pressure is eppiied egeinstthe two parts. The ring 23 referebiy is mede 'hollow :tor purposes oiightness es will loe seen 'from the drevvin Between the sprocket Wheels7 en i2 end the jeclr posts, 1 preier to piece entitriction beer-ing 28,to take up the end thrust ot the drum in operation.

The sheft 8 is mounted siidebiy in teerings et eecii end, .the bearingset one end 'teing extended beyond the jock post es shown et 3d. Theouter end ot the peering sieeve upon the noir post is threaded et 31, toreceive e, trend nut or oep 32., Seid nut e tiendvvlfieel S3 thereon, tyineens oit which it tney 'te rotated. The outer end ci? tire nut eninvverdiy extending denge 342, end the slieftt 8 et its outer end isreducen meterieiiy in diemeter providing e shonider et 35. Between thisshoulder end tile flange ot the not is e. teil rece 36. A simiiertearing member 3@ is pleced outside ot the enge 3d, seid bearing memberbeing held position Toy e Wester 3"? .tired to the ity e pin 35%,

1t will te epperent tiret the rotation o 'Biie nut 32 vviii te ted tomove tiie snet 8 iongitudineiiy in its izeerings, end es tire drum istired tette the drum vvili be moved therewith. Tire space 1between thesprocket vvn-eefis end is so errenged tiret the ciutcii rnenioers 23 eteecii end thereor" vviii not totti ce in engagement vvitn tire drum ettire seine time, tact there is e neutrni position indiceted in Fig. i inwhich neither end ot the drum will be in Contact vvitii clutch member23., The movement'ot the' shaft 'with the drum thereon in eitherdirection through the rotation out the nut 32 Wilt lering the drum intoengagement with one upon the shetin opposite, it will be obvious thatthe speed o rotation of the drum may be varied by connecting the drumwith one or the other of seid clutches, the wheel 7 being operated et e.faster speed then the Wheel 12. 1n operation the springs 21 tend to holdthe drum away trom the clutch members end to assist in sepereting themwhen the drum is moved in en obvious manner.

lin Figs. 2 end 3 the errengement of the device is identicel with tiretshown in Fig. 1, except that the springs 21a-ire eiiminet/ed and inpiece thereof e bracket 39' is mounted upon the jock post ut etch end,end en erm thereon is extended invverdi end loes e :tor-keel end thereonengaging within e groove 4t@ in the nuts oi the sprocket Wheels 7 end12.. This engagement ellovvs the rotation on? the sprocket Wheels withthe iingers et the end of the erm 39 fitting within the groove d0. itserves, however,y to4 prevent iongitudinei movement of the sprocketvvheels upon the shaft 8. 'liius 'when tire drum is moved with the shaftes previously noted, the sprocket Wheels 7 with the clntcii ringsthereon ere forced to reinein in their iongitudinei position eliowingthe drum to move reletive thereto so es 'to reiease or set the cintciies desired. The eliminating ot the springs 21 niso evoids the necessityoi using the inner tearing member 22,

The operation ot my device hns eireedy been described.. it will be notedtiret the operetor may eesiiy move tire @inten engege the drum with timedesired speed ley rotation oi" tire eend vviieei 3? in tire desireddirection. The edventege iies in die :inet that the cintcii tney tieengaged gredueiiy so es to prevent strooit npon'tiie meciienism. theseme time, itis possibi/e to engage the cintcti to the drum positivelyin such menner es to prevent lipping when desired., L'ltns-i insidievviii answer to edi ust the clutch vvitii accuracy for either high orlow speed. 'te furthermore not/ed tiret the menne for moving tile drumund siieit enebl'es the operator heid die drum in the erect positiondesired in e. manner which will prevent any eccidentel siipping evveytroni tire desired position dur-y ing operation. The ciutcli isdieidrigidly by time hond mit so tiret no looseness een ocour, end the degreeet tirmness 'with which tire ciutch is set is easily adjusted.

Hering thus described my invention what t cis-ini es new is:

. 1. it. friction ciutcii control ineens including e, streift, e peeringtherefor, n oep member threaded to seid bearing, end ineens on seid Cepend seid shaft whereby seid streit may toe moved longitudineliy withrespect to seid tearing by movement of seid oepu 2. A roteteble shaft,loeerings therefor, e hoisting drum heving e tapered groove thereon undxed on seid shaft, e wheel on seid shaft et the end or seid drum,` etepered igy i'mgaso tion ring member on saidwheel shaped tn t within thetapered groove, and means to y move said hoisting drum longitudinallytive to said ring to engage the same, slid means including a capthreaded to one of sand' bearings, and a Bange on said ea connected withsaidv shaft, whereby longitusmnl Y movement of saidcap will-movesaid Intestimony whereof I hereunto nx my 1o signature this 10th day of May, A.D. 1928.

' ARTHUR C. BENSON.'

